Aging
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Figure 2
Figure 2.PD-L1 representative pictures by immunostaining in ESCC. (A) Negative pattern for PD-L1; (B) Positive pattern for PD-L1; (C) the positive control staining (Placental tissue). Abbreviations: ESCC: Esophageal Squamous Cell Carcinoma; PD-L1: Programmed Death-Ligand 1.
Figure 2 — Prognostic significance of epidermal growth factor receptor and programmed cell death-ligand 1 co-expression in esophageal squamous cell carcinoma | Aging